Catalytic Enantioselective 1,2-Addition of Terminal 1,3-Diynes to Trifluoromethyl Ketones
作者:Yan Zheng、Hai Ma、Jun-An Ma
DOI:10.1002/cjoc.201500901
日期:2016.5
A facile catalytic enantioselective 1,2‐addition of diynes to trifluoromethyl ketones was developed. By a combination of Me2Zn, Ti(OPr‐i)4, BaF2 and quinine, the reaction of a series of terminal diynes with trifluoromethyl ketones proceeded to afford trifluoromethylated chrial tertiary alcohols with the diyne moiety in good to high yields with moderate to high enantioselectivities. Furthermore, this
开发了一种简便的对二炔与三氟甲基酮催化的对映选择性1,2-加成反应。通过Me 2 Zn,Ti(OPr- i)4,BaF 2和奎宁的组合,一系列末端二炔与三氟甲基酮的反应进行,得到具有二炔部分的三氟甲基化的叔丁基醇,收率良好,高收率,中等高对映选择性。此外,在三氟甲基酮中的这种催化不对称二炔加成反应被用于依夫韦伦类似物的合成中。